Open Device ManagerRight Click the Device Manager \ Other Devices \ arduino leonardo bootloaderSelect PropertiesSelect Details tabChoose Hardware Ids from the Property drop-downSend us the Hardware Ids that show in the Value section.

Or the Arduino store here: http://store.arduino.cc/ww/index.php?main_page=product_info&cPath=11_12&products_id=225http://store.arduino.cc/ww/index.php?main_page=product_info&cPath=11_12&products_id=226